<template>
  <div>
    <city-header></city-header>
    <city-search :cities="cities"></city-search>
    <city-list :cities="cities" :hot="hotCities" :letter="letter"></city-list>
    <city-alphabet :cities="cities" @change="handleLetterChange"></city-alphabet>
  </div>
</template>

<script>
import CityHeader from './components/Header.vue'
import CitySearch from './components/Search.vue'
import CityList from './components/List.vue'
import CityAlphabet from './components/Alphabet.vue'
import axios from 'axios'
export default {
  components: {
    CityHeader,
    CitySearch,
    CityList,
    CityAlphabet
  },
  data () {
    return {
      cities: {},
      hotCities: [],
      letter: ''
    }
  },
  methods: {
    getCityInfo() {
      axios.get('/api/city.json')
        .then(this.getCityInfoSucc)
    },
    getCityInfoSucc(res) {
      console.log(res)
      res = res.data
      if (res.ret && res.data) {
        const data = res.data
        this.cities = data.cities
        this.hotCities = data.hotCities
      }
    },
    handleLetterChange (letter) {
      this.letter = letter
      // 这个是要来解决List组件wathc letter 的时候 多次都是点击同一个值，没反应的问题（因为watch要值改变了才监听到）
      setTimeout(() => {
        this.letter = ''
      }, 10)
    }
  },
  mounted() {
    this.getCityInfo()
  }
}
</script>

<style lang="stylus" scoped>

</style>
